<template>
  <div>
    <el-upload
      :action="uploadUrl"
      :before-upload="handleBeforeUpload"
      :on-success="handleUploadSuccess"
      :on-error="handleUploadError"
      name="file"
      :show-file-list="false"
      :headers="headers"
      style="display: none"
      ref="upload"
      v-if="this.type == 'url'"
    >
    </el-upload>
    <el-upload 
      class="uploadFile" 
      :action="uploadUrl"
      :on-success="uploadSuccessVideo"
      :limit="1" 
      :on-exceed="handleExceed"
      :on-remove="handleRemove" 
      :headers="headers"
      :file-list="fileList">
      <i class="el-icon-upload"></i>
      <div class="el-upload__text">
        将文件拖到此处，或<em>点击上传</em>
      </div>
    </el-upload>
    <el-upload 
      class="uploadVedio" 
      :action="uploadUrl"
      :on-success="uploadSuccessVideo"
      :limit="1" 
      :on-exceed="handleExceed"
      :on-remove="handleRemove" 
      :headers="headers"
      :file-list="fileList">
      <i class="el-icon-upload"></i>
      <div class="el-upload__text">
        将文件拖到此处，或<em>点击上传</em>
      </div>
    </el-upload>
    <div class="editor" ref="editor" :style="styles" @change="onEditorChange($event)"></div>
<!--视频上传弹窗-->
    <div>
      <el-dialog :close-on-click-modal="false" width="50%" style="margin-top: 1px" title="视频上传" :visible.sync="videoForm.show" append-to-body>
        <el-tabs v-model="videoForm.activeName">
          <el-tab-pane label="添加视频链接" name="first">
            <el-input v-model="videoForm.videoLink" placeholder="请输入视频链接" clearable></el-input>
            <el-button type="primary" size="small" style="margin: 20px 0px 0px 0px " @click="insertVideoLink(videoForm.videoLink)">确认
            </el-button>
          </el-tab-pane>
          <el-tab-pane label="本地视频上传" name="second">
            <el-upload 
            v-loading="loading" 
            style="text-align: 
            center;" 
            drag 
            :action="severUrl" 
            accept="video/*" 
            :name="uploadVideoConfig.name" 
            :before-upload="onBeforeUploadVideo" 
            :on-success="onSuccessVideo" 
            :on-error="onErrorVideo" 
            :multiple="false">
              <i class="el-icon-upload"></i>
              <div class="el-upload__text">将文件拖到此处，或<em>点击上传</em></div>
              <div class="el-upload__tip" slot="tip">只能上传MP4文件，且不超过{{uploadVideoConfig.maxSize}}M</div>
            </el-upload>
          </el-tab-pane>
        </el-tabs>
      </el-dialog>
    </div>


  </div>
</template>
<style>
  .ql-video{
    background: #000000;
  }
  .quill-editor .ql-snow.ql-toolbar .ql-formats .ql-upload {
  background: #000000;
  background-size: 16px 16px;
  background-position: center center;
  background-repeat: no-repeat;
}
 
/* 隐藏upload上传，用模拟事件触发 */
.uploadFile {
  width: 0;
  height: 0;
  display: none;
}
</style>
<script>
import Quill from "quill";
import "quill/dist/quill.core.css";
import "quill/dist/quill.snow.css";
import "quill/dist/quill.bubble.css";
import { getToken } from "@/utils/auth";
import d_img from "../../assets/img/icon_default.png"

var Link = Quill.import('formats/link');
class FileBlot extends Link {  // 继承Link Blot
  static create(value) {
    let node = undefined
    if (value && !value.href) {  // 适应原本的Link Blot
      node = super.create(value);
    }
    else {  // 自定义Link Blot
      node = super.create(value.href);
      node.setAttribute('download', value.innerText);  // 左键点击即下载
      node.innerText = value.innerText;
      node.download = value.innerText;
    }
    return node;
  }
}
FileBlot.blotName = 'link';
FileBlot.tagName = 'A';
Quill.register(FileBlot);


var Video = Quill.import('formats/video');
class FileBlots extends Video {  
  static create(value) {
    let nodes = undefined
    if (value && !value.src) {  
      nodes = super.create(value);
    }
    else {  // 自定义Link Blot
      nodes = super.create(value.src);
      nodes.setAttribute('type', 'video/mp4');
      nodes.setAttribute('autoplay', 'autoplay');
      nodes.setAttribute('controls', 'controls');
      nodes.setAttribute('width', '720');
      nodes.setAttribute('height', '400');
    }
    return nodes;
  }
}
FileBlots.blotName = 'video';
FileBlots.tagName = 'video';
Quill.register(FileBlots);


export default {
  name: "Editor",
  props: {
    /* 编辑器的内容 */
    value: {
      type: String,
      default: "",
    },
    /* 高度 */
    height: {
      type: Number,
      default: null,
    },
    /* 最小高度 */
    minHeight: {
      type: Number,
      default: null,
    },
    /* 只读 */
    readOnly: {
      type: Boolean,
      default: false,
    },
    /* 上传文件大小限制(MB) */
    fileSize: {
      type: Number,
      default: 5,
    },
    /* 类型（base64格式、url格式） */
    type: {
      type: String,
      default: "url",
    },
    uploadVideoConfig: {
      type: Object,
      default () {
        return {
          uploadUrl: '', // 上传地址
          maxSize: 10, // 图片上传大小限制，默认不超过2M
          name: 'Filedata' // 图片上传字段
        }
      }
    }
  },
  data() {
    return {
      uploadUrl: process.env.VUE_APP_BASE_API + "/common/upload", // 上传的图片服务器地址
      severUrl: process.env.VUE_APP_BASE_API + "/upload/UploadFujian",
      loading: false,
      videoForm: {
        show: false, // 显示插入视频链接弹框的标识
        videoLink: '',
        activeName: 'first'
      },
      headers: {
        Authorization: "Bearer " + getToken()
      },
      fileList: [],
      Quill: null,
      currentValue: "",
      options: {
        theme: "snow",
        bounds: document.body,
        debug: "warn",
        modules: {
          // 工具栏配置
          toolbar: {
          container: [
            ["bold", "italic", "underline", "strike"],       // 加粗 斜体 下划线 删除线
            ["blockquote", "code-block"],                    // 引用  代码块
            [{ list: "ordered" }, { list: "bullet" }],       // 有序、无序列表
            [{ indent: "-1" }, { indent: "+1" }],            // 缩进
            [{ size: ["small", false, "large", "huge"] }],   // 字体大小
            [{ header: [1, 2, 3, 4, 5, 6, false] }],         // 标题
            [{ color: [] }, { background: [] }],             // 字体颜色、字体背景颜色
            [{ align: [] }],                                 // 对齐方式
            ["clean"],                                       // 清除文本格式
            ["link", "image", "video", "upload"],                       // 链接、图片、视频
          ],
            
            handlers: {
              'upload': (value => {
                if (value) {
                  document.querySelector('.uploadFile input').click()
                }
              }),
              'video': () => {
                this.videoForm.show = true
              }
            }
          },
          
        },
        placeholder: "请输入内容",
        readOnly: this.readOnly,
      },
    };
  },
  computed: {
    styles() {
      let style = {};
      if (this.minHeight) {
        style.minHeight = `${this.minHeight}px`;
      }
      if (this.height) {
        style.height = `${this.height}px`;
      }
      return style;
    },
  },
  watch: {
    value: {
      handler(val) {
        if (val !== this.currentValue) {
          this.currentValue = val === null ? "" : val;
          if (this.Quill) {
            this.Quill.pasteHTML(this.currentValue);
          }
        }
      },
      immediate: true,
    },
  },
  mounted() {
    this.init();
  },
  beforeDestroy() {
    this.Quill = null;
  },
  methods: {
    insertVideoLink (videoLink) {
      if (!videoLink) {
        this.$message.error('视频地址不能为空！')
      } else {
        this.videoForm.show = false
        this.videoForm.videoLink = ''
        let quill = this.Quill
        let range = quill.getSelection()
        quill.insertEmbed(range, 'video', {src: videoLink})
        // 调整光标到最后
        quill.setSelection(range + 1)
      }
    },
    // el-文件上传组件
    onBeforeUploadVideo (file) {
      this.loading = true
      let acceptArr = ['video/mp4']
      const isVideo = acceptArr.includes(file.type)
      const isLt1M = file.size / 1024 / 1024 < this.uploadVideoConfig.maxSize
      if (!isVideo) {
        this.loading = false
        this.$message.error('只能上传mp4格式文件!')
      }
      if (!isLt1M) {
        this.loading = false
        this.$message.error(`上传文件大小不能超过 ${this.uploadVideoConfig.maxSize}MB!`)
      }
      return isLt1M && isVideo
    },
    // 文件上传成功时的钩子
    onSuccessVideo (res) {
      this.loading = false
      if (res) {
        this.insertVideoLink(res)
      } else {
        this.$message.error(res)
      }
    },
    // 文件上传失败时的钩子
    onErrorVideo () {
      this.loading = false
      this.$message.error('上传失败')
    },
    onEditorChange(e) {
      this.$emit('changeContent', e.html)
    },
    handleExceed() {
      this.$message.warning(`当前限制选择 1 个文件,请删除后更新！`);
    },
    // 移除文件
    handleRemove() {
      this.fileList = [];
    },
    init() {
      const editor = this.$refs.editor;
      this.Quill = new Quill(editor, this.options);
      // 如果设置了上传地址则自定义图片上传事件
      if (this.type == 'url') {
        let toolbar = this.Quill.getModule("toolbar");
        toolbar.addHandler("image", (value) => {
          if (value) {
            this.$refs.upload.$children[0].$refs.input.click();
          } else {
            this.quill.format("image", false);
          }
        });
      }
      this.Quill.pasteHTML(this.currentValue);
      this.Quill.on("text-change", (delta, oldDelta, source) => {
        const html = this.$refs.editor.children[0].innerHTML;
        const text = this.Quill.getText();
        const quill = this.Quill;
        this.currentValue = html;
        this.$emit("input", html);
        this.$emit("on-change", { html, text, quill });
      });
      this.Quill.on("text-change", (delta, oldDelta, source) => {
        this.$emit("on-text-change", delta, oldDelta, source);
      });
      this.Quill.on("selection-change", (range, oldRange, source) => {
        this.$emit("on-selection-change", range, oldRange, source);
      });
      this.Quill.on("editor-change", (eventName, ...args) => {
        this.$emit("on-editor-change", eventName, ...args);
      });
    },
    // 上传前校检格式和大小
    handleBeforeUpload(file) {
      const type = ["image/jpeg", "image/jpg", "image/png", "image/svg"];
      const isJPG = type.includes(file.type);
      // 检验文件格式
      if (!isJPG) {
        this.$message.error(`图片格式错误!`);
        return false;
      }
      // 校检文件大小
      if (this.fileSize) {
        const isLt = file.size / 1024 / 1024 < this.fileSize;
        if (!isLt) {
          this.$message.error(`上传文件大小不能超过 ${this.fileSize} MB!`);
          return false;
        }
      }
      return true;
    },
    handleUploadSuccess(res, file) {
      // 如果上传成功
      if (res.code == 200) {
        // 获取富文本组件实例
        let quill = this.Quill;
        // 获取光标所在位置
        let length = quill.getSelection().index;
        // 插入图片  res.url为服务器返回的图片地址
        quill.insertEmbed(length, "image", process.env.VUE_APP_BASE_API + res.fileName);
        
        // 调整光标到最后
        quill.setSelection(length + 1);
      } else {
        this.$message.error("图片上传失败");
      }
    },
    uploadSuccessVideo(res,file) {
      if (res.code === 200) {
        let quill = this.Quill;
        let length = quill.getSelection().index;
        quill.insertEmbed(length, 'link', { href: process.env.VUE_APP_BASE_API + res.fileName, innerText: res.newFileName }, "api")
        quill.insertEmbed(length, "image", d_img);
        quill.setSelection(length + 1)
        this.fileList = []
      } else {
        this.$message.error("上传失败");
      }

    },
    uploadSuccessVoice(res,file) {

    },
    handleUploadError() {
      this.$message.error("上传失败");
    },
  },
};
</script>

<style>
.editor, .ql-toolbar {
  white-space: pre-wrap !important;
  line-height: normal !important;
}
.quill-img {
  display: none;
}
.ql-snow .ql-tooltip[data-mode="link"]::before {
  content: "请输入链接地址:";
}
.ql-snow .ql-tooltip.ql-editing a.ql-action::after {
  border-right: 0px;
  content: "保存";
  padding-right: 0px;
}
.ql-snow .ql-tooltip[data-mode="video"]::before {
  content: "请输入视频地址:";
}
.ql-snow .ql-picker.ql-size .ql-picker-label::before,
.ql-snow .ql-picker.ql-size .ql-picker-item::before {
  content: "14px";
}
.ql-snow .ql-picker.ql-size .ql-picker-label[data-value="small"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="small"]::before {
  content: "10px";
}
.ql-snow .ql-picker.ql-size .ql-picker-label[data-value="large"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="large"]::before {
  content: "18px";
}
.ql-snow .ql-picker.ql-size .ql-picker-label[data-value="huge"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="huge"]::before {
  content: "32px";
}
.ql-snow .ql-picker.ql-header .ql-picker-label::before,
.ql-snow .ql-picker.ql-header .ql-picker-item::before {
  content: "文本";
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="1"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="1"]::before {
  content: "标题1";
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="2"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="2"]::before {
  content: "标题2";
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="3"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="3"]::before {
  content: "标题3";
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="4"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="4"]::before {
  content: "标题4";
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="5"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="5"]::before {
  content: "标题5";
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="6"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="6"]::before {
  content: "标题6";
}
.ql-snow .ql-picker.ql-font .ql-picker-label::before,
.ql-snow .ql-picker.ql-font .ql-picker-item::before {
  content: "标准字体";
}
.ql-snow .ql-picker.ql-font .ql-picker-label[data-value="serif"]::before,
.ql-snow .ql-picker.ql-font .ql-picker-item[data-value="serif"]::before {
  content: "衬线字体";
}
.ql-snow .ql-picker.ql-font .ql-picker-label[data-value="monospace"]::before,
.ql-snow .ql-picker.ql-font .ql-picker-item[data-value="monospace"]::before {
  content: "等宽字体";
}
/* .ql-snow.ql-toolbar button */
.ql-snow.ql-toolbar button.ql-upload{
  background: url("../../assets/img/fujian.png") no-repeat center center;
  background-size: 18px 18px;
}
</style>
